#include <SDL.h>
#include <string.h>
#include "lephisto.h"
#include "log.h"
#include "joystick.h"

static SDL_Joystick* joystick = NULL;

int joystick_get(char* namjoystick) {
  int i;
  for(i = 0; i < SDL_NumJoysticks(); i++)
    if(strstr(SDL_JoystickName(i), namjoystick))
      return i;

  WARN("Joystick '%s' not found, using default joystick '%s'",
        namjoystick, SDL_JoystickName(0));
  return 0;
}

int joystick_use(int indjoystick) {
  if(indjoystick < 0 || indjoystick >= SDL_NumJoysticks()) {
    WARN("Joystick of index number %d does not exist. Switching to default (0)", indjoystick);
    indjoystick = 0;
  }
  if(joystick)
    // Might as well close it if it is open already.
    SDL_JoystickClose(joystick);
  // Start using the joystick.
  LOG("Using joystick %d", indjoystick);
  joystick = SDL_JoystickOpen(indjoystick);
  if(joystick == NULL) {
    WARN("Error opening joystick %d [%s]", indjoystick, SDL_JoystickName(indjoystick));
    return -1;
  }
  DEBUG("\t\tWith %d axes, %d buttons, %d balls, and %d hats",
        SDL_JoystickNumAxes(joystick), SDL_JoystickNumButtons(joystick),
        SDL_JoystickNumBalls(joystick), SDL_JoystickNumHats(joystick));

  return 0;
}

int joystick_init(void) {
  int numjoysticks, i;

  // Init the SDL subsys.
  if(SDL_InitSubSystem(SDL_INIT_JOYSTICK)) {
    WARN("Unable to init the joystick subsystem.");
    return -1;
  }

  // Figure out how many joysticks there are.
  numjoysticks = SDL_NumJoysticks();
  LOG("%d joystick%s detected", numjoysticks, (numjoysticks==1)?"":"s");
  for(i = 0; i < numjoysticks; i++)
    LOG("\t\t%d. %s", i, SDL_JoystickName(i));

  // Enable joystick events.
  SDL_JoystickEventState(SDL_ENABLE);

  return 0;
}

void joystick_exit(void) {
  SDL_JoystickClose(joystick);
}